Self-cooling liquid container

ABSTRACT

The present invention relates to a self-cooling liquid container for rapidly cooling the liquid in a container by evaporation of coolant gas. A self-cooling liquid container having a liquid cooling device for cooling a liquid in a container by evaporation of a coolant gas comprises a coolant gas bottle inside the liquid container containing a coolant gas stored under pressure, a nozzle tube communicating with the coolant gas bottle and rounding outside the coolant gas bottle, a mounting support for mounting and supporting the coolant gas bottle inserted into the liquid container, and having a switching portion for selectively releasing the coolant gas, and a cap coupled with the mounting support outside of the container and selectively opening and closing the switching portion.

TECHNICAL FIELD

[0001] The present invention relates to a self-cooling liquid containerfor rapidly cooling the liquid in a container by evaporation of coolantgas.

BACKGROUND ART

[0002] Generally, cooling of beverage contained in a container such as abottle, can, pet bottle is accomplished by storing in a coolingapparatus such as a refrigerator. But in summer it takes long time tocool the beverage.

[0003] The prior art of using a freon gas has a problem of destructionof ozone layer.

[0004] Korean Patent Registration No. 240,195 discloses a prior art ofthe invention. The prior art discloses a portable cooling devicecomprising a coolant gas bottle for storing a coolant gas, a coolant gasrod for emitting the coolant gas stored in the coolant gas bottle, a capcoupled to a top of the coolant gas rod and a coolant gas bottle casefor protecting the coolant gas bottle. It is portable but can not beapplied into an airtight container such as a can.

[0005] Further, Korean Patent Registration No. 240,197 discloses a priorart of the invention. The prior art discloses a beverage can having aninternal cooling means. The internal cooling means is provided with anupper surface member and a bottom surface member with interval, a spongeis inserted between the upper and bottom surface member and the coolantgas is absorbed into the sponge through the bottom surface memberthereby preventing an accident of explosion. As the coolant gas isstored in the bottom of the can, the beverage in the can is not able tobe proportionally entirely cooled and the internal capacity of the canis reduced.

DISCLOSURE OF INVENTION

[0006] Therefore, the present invention has been made in an effort tosolve the problem. It is an objective of the present invention toprovide a self-cooling liquid container having a helical coolant gastube thereby improving cooling efficiency.

[0007] It is another object of the present invention to provide aself-cooling liquid container that is designed to increase a contactsurface of a beverage and cooling device thereby improving coolingefficiency and reducing the time of cooling the beverage.

[0008] It is still another object of the present invention to provide aself-cooling liquid container that is designed to control the emittingdegrees of the coolant gas thereby controlling the temperature of thebeverage.

[0009] It is a still further object of the present invention to providea self-cooling liquid container that has a simple design and is stablyworked in any case.

[0010] To achieve the above objects, the present invention provides aself-cooling liquid container having a liquid cooling device for coolinga liquid in a container by evaporation of a coolant gas comprising acoolant gas bottle inside the liquid container containing a coolant gasstored under pressure, a nozzle tube communicating with the coolant gasbottle and rounding outside the coolant gas bottle, a mounting supportfor mounting and supporting the coolant gas bottle inserted into theliquid container, and having a switching portion for selectivelyreleasing the coolant gas, and a cap coupled with the mounting supportoutside of the container and selectively opening and closing theswitching portion.

BRIEF DESCRIPTION OF DRAWINGS

[0011] The accompanying drawings, which are incorporated in andconstitute a part of the specification, illustrate an embodiment of theinvention, and, together with the description, serve to explain theprinciples of the invention:

[0012]FIG. 1 is a partly sectional view of a self-cooling liquidcontainer having a self-cooling device of the present invention

[0013]FIG. 2 is a partly sectional view of the self-cooling liquidcontainer where a skirt is terminated from a cap;

[0014]FIG. 3 is a partly section view of the self-cooling liquidcontainer where the cap is rotated in an operating position of a coolingdevice;

[0015]FIG. 4 is a sectional view of a liquid cooling device of theself-cooling liquid container of the present invention;

[0016]FIG. 5 is a side view of the liquid cooling device of theself-cooling liquid container of the present invention;

[0017]FIG. 6 is a partly enlarged view of the liquid cooling device ofthe self-cooling liquid container of the present invention;

[0018]FIG. 7 is a partly enlarged view of the liquid cooling devicemounted on the container of the present invention;

[0019]FIG. 8 is a partly sectional view of the self-cooling liquidcontainer according to another embodiment of the present invention wherethe liquid cooling device is applied to a bottle;

[0020]FIG. 9 is a partly sectional view of the self-cooling liquidcontainer according to still another embodiment of the present inventionwhere the liquid cooling device is applied to a thin-film container;

[0021]FIG. 10 is a partly sectional view of the self-cooling liquidcontainer according to a still further embodiment of the presentinvention where the liquid cooling device is applied to a bottle cap;

[0022]FIG. 11 is a side view of a nozzle tube according to anotherembodiment of the present invention;

[0023]FIG. 12 is a side view of a nozzle tube according to still anotherembodiment of the present invention;

[0024]FIG. 13 is a partly sectional view of a mounting support and a capaccording to another embodiment of the present invention;

[0025]FIG. 14 is a view substantially as in FIG. 13 where the mountingsupport and the cap are in an operating position;

[0026]FIG. 15 is a partly sectional view of a mounting support and a capaccording to still another embodiment of the present invention;

[0027]FIG. 16 is a view substantially as in FIG. 15 where the mountingsupport and the cap are coupled to the container;

[0028]FIG. 17 is a partly sectional view where a mounting support and acap according to a still further embodiment of the present invention arecoupled to the container;

[0029]FIGS. 18 and 19 is a view substantially as in FIG. 17 where themounting support and the cap are in an operating position;

[0030]FIG. 20 is a side view of a coolant gas bottle according to anembodiment of the present invention;

[0031]FIG. 21 is a side view of a cap according to an embodiment of thepresent invention;

[0032]FIG. 22 is a partly cut-away sectional view where the coolant gasbottle is coupled to the container;

[0033]FIG. 23 is a partly enlarged sectional view where the coolant gasbottle and the cap are coupled;

[0034]FIG. 24 is a partly enlarged sectional view where the cap is in anoperating position;

[0035]FIG. 25 is a side view of a coolant gas bottle according to anembodiment of the present invention;

[0036]FIG. 26 is a partly cut-away sectional view showing a sealingportion; and

[0037]FIG. 27 is a side view of a coolant gas bottle according to anembodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

[0038] A preferred embodiment of the present invention will be describedin detail with reference to the accompanying drawings.

[0039] FIGS. 1 to 7 shows a self-cooling liquid container having aliquid cooling device where the liquid cooling device 100 is mounted inthe container 200.

[0040] The liquid cooling device 100 is provided with a coolant gasbottle 101 inside the liquid container 200 containing a coolant gasstored under pressure. The top end of the coolant gas bottle 101 isformed with a nozzle portion 102. The nozzle portion 102 communicateswith an end of a nozzle tube 103.

[0041] The nozzle tube 103 is helical-extended and the other end of thenozzle tube 103 is provided with a switching portion 104 for selectivelyreleasing the coolant gas.

[0042] The diameter of the switching portion 104 is larger than that ofthe nozzle tube 103 and the switching portion 104 is provided at itsinside with a spring 105. The switching portion 104 is provided with aswitching protrusion 106 downwardly forced by the inner spring 105. Apacking 107 is inserted between the switching protrusion 106 andswitching portion 104.

[0043] The switching portion 104 is fixedly mounted on a mountingsupport 108 mounted on a bottom of the container 200.

[0044] The mounting support 108 is preferably formed with syntheticresins for having an elasticity.

[0045] The mounting support 108 is provided with an annular couplinggroove 109 and an annular protrusion 110 to coupled with a bendingportion 202 of a punching portion of a bottom portion 201, and aseal-ring 111 is inserted between the annular coupling groove 109 andthe annular protrusion 110 for sealing with the container 200.

[0046] The annular protrusion 110 is provided at it bottom with a skirtinserting groove 112 and a male screw portion 113, and the mountingsupport 108 is provided at its inside with a switching portion insertinggroove 114 for inserting and fixing the switching portion 104.

[0047] A packing 115 is inserted below the switching portion insertinggroove 114 for sealing after inserting the switching portion 104. Theswitching portion inserting groove 114 is formed with a hole 114 a andan annular groove 116 is formed inside the hole 114 a.

[0048] A cap 117 is coupled to the male screw portion 113 of themounting support 108.

[0049] The cap 117 is composed of an end portion 118 and a side wallportion 119. The inner surface of the side wall portion 119 is formedwith a female screw portion 120 coupled with the male screw portion 113.

[0050] A skirt 121 and an annular protrusion 122 is formed at the upperpart of the female screw portion 120. The skirt 121 is formed with anseparating guide line 123.

[0051] At one side of the skirt 121, there is a knob 124 for pulled by afinger, and there is a protrusion 125 at the central of the inside ofthe end portion 118. A gas emitting groove 126 is formed from one sideof the protrusion 125 to the inner surface of the side wall portion 119.

[0052] As described above, the liquid cooling device 100 of the presentinvention is coupled to the mounting support 108 after the coolant gaswas stored under high pressure into the coolant gas bottle 101 in statethat a cap 203 of the container 200 is not coupled thereto. The mountingsupport 108 is firmly mounted on a bottom portion 201 of the container200. In state that the male screw portion 113 of the mounting support108 is firmly coupled to the female screw portion 120 of the cap 117,the liquid is poured into the container 200 and the cap 203 is closed.Those are all of the assembling procedures.

[0053] That is, as shown in FIG. 1, the liquid cooling device 100 isfixed to the bending portion 202 of the bottom portion 201 and insertedinto the annular coupling groove 109 of the mounting support 108. Theannular groove 110 is inserted into the end of the bending portion 202thereby strictly fixing the liquid cooling device 100. The female screwportion 120 of the cap 117 is coupled to the male screw portion 113 ofthe mounting support 108.

[0054] As shown in FIG.2, in the case of cooling the beverage of thecontainer 200, when the knob 124 of the cap 117 is pulled by a finger,the separating guide line cuts and the skirt 121 is separated from thecap 117.

[0055] Referring to FIG. 3, when the cap 117 is rotated in an openingdirection, the cap 117 is upwardly moved owing to a unification of themale and female screw portions and the upper surface of the protrusion125 contacts the bottom of the switching protrusion 106. Then, theswitching protrusion 106 presses the spring 105 so that the packing 107is released and the switching portion 104 is open.

[0056] When the switching portion 104 is open, the coolant gas containedin the coolant gas bottle 101 is evaporated through the nozzle portion102 and the nozzle tube 103.

[0057] Referring to FIG. 6, as the protrusion 125 upwardly moves and thering formed at the periphery of the protrusion 125 and the bottom of theannular groove 116 of the mounting support 108, the cap 117 istemporarily resisted to move upwardly. In this state, the coolant gas iscontinuously emitted. This is the first step of cooling the liquid wherethe cooling time can be delayed.

[0058] Further, as shown in FIGS. 3 and 7, when the cap 117 is furtherrotated, the periphery ring of the protrusion 125 is inserted into theannular groove 116 over the bottom jaw of the annular groove 116 formedin the mounting support 108. At this point the coolant gas of thecoolant gas bottle 101 is evaporated through the nozzle portion 102 andthe nozzle tube 103 thereby accomplishing the heat exchange, and thenthe gas is emitted through a gas emitting groove 126.

[0059] The control of the degree of liquid cooling is accomplished inbelow procedures. As the cap 117 rotates in an closing direction, thecap 117 moves downwardly and the switching protrusion 106 is closed bythe restituting force of the pressure of the coolant gas and the spring105 so that the emitting of the coolant gas stored in the coolant gasbottle 101 is prevented.

[0060] As described above, the liquid cooling device 100 of the presentinvention, is designed such that the coolant gas bottle 101 and thenozzle tube is helically formed to increase the contact surface with theliquid thereby increasing the cooling efficiency and reducing thecoolant gas bottle 101.

[0061] Further, it is possible to apply the liquid cooling device 100 toa can and a bottle, as shown in FIG. 8, such that a hole is formed onthe bottom portion 301 of the bottle 300 and the mounting support 108 iscoupled to the bending coupling portion 302.

[0062] In another embodiment of the present invention, the liquidcooling device 100 of the invention, as shown in FIG. 9, is mounted to aflexible container 400 of paper, synthetic resins and pouch such that apunching hole 401 is formed on a surface of the flexible container 400and an adhesive surface 127 of the mounting support 108 sticks to a topof bottom surface of the punching hole 401.

[0063]FIG. 10 shows still another embodiment of the present invention.The liquid cooling device 100 is mounted on a bottle neck. The mountingsupport 108 is designed to be a bottle cap 500. The inner surface of thecap 500 is formed with a screw thread 501, the bottom of the cap 500 isformed with a opening identification skirt 502 and a packing 503 isinserted into the upper inner surface of the cap 500.

[0064]FIG. 11 shows a still further embodiment of the present invention;The liquid cooling device 100 is designed such that the nozzle tube 103is helically rounded around the coolant gas bottle 101 and the roundingdiameter is irregular. These increase the contact surface.

[0065] A reinforcement 128 is provided around the nozzle tube 103thereby preventing its deformation owing to a coolant gas flow.

[0066] In another embodiment of the present invention, the liquidcooling device 100 of the present invention is designed such that thenozzle tube 103 is longitudinally mounted in the container shown in FIG.12. In this case, both ends of the nozzle tube 103 is bent and connectedto the nozzle portion 102 and the switching portion 104. Thereinforcement 128 is provided to the upper and bottom portion of thenozzle portion 102 for preventing the deformation owing to a coolant gaspressure.

[0067] Referring to FIG. 13, the liquid cooling device 100 is designedsuch that a coolant gas emitting hole 129 is formed inside the switchingprotrusion 106 and the coolant gas emitting hole 129 communicates with agas emitting hole 126 formed at a upper side of the switching protrusion106.

[0068] Further, the bottom of the gas emitting hole 129 inclines, aspace portion 130 is formed in a bottom of a hole 114 a corresponding tothe end of the hole 126, and a ring 131 is protruded at the periphery ofthe protrusion 125 of the cap 117.

[0069] In this embodiment, as shown in FIG. 14, after the skirt 121 isremoved by pulling the knob 124 of the cap 117, the cap 117 rotatesclockwiese and the protrusion 125 pushes the bottom end of the switchingprotrusion 106 so that the switching portion 104 is in an opening state.Simultaneously, the coolant gas contained in the coolant gas bottle 101is evaporated through the switching protrusion 106, the gas emittinghole 129 and the gas emitting hole 126 formed in the cap 117 via thenozzle portion 102 and the nozzle tube 103.

[0070] Further, it is possible to control the temperature of the liquidby controlling the volume of the evaporated coolant gas according to theregulation of the cap 117.

[0071] The knob 131 around the protrusion 125 further functions as asafety device preventing the cap 117 from being separated by thepressure of the coolant gas. When children use the cap 117, the knob 131hooks at the bottom jaw of a space portion 130 so that the cap 117 cannot be easily pulled up.

[0072] In another embodiment, as shown in FIG. 15, the liquid coolingdevice 100 is formed with a threaded portion 113 a at the periphery ofthe protrusion 125 and a corresponding threaded portion 114 b is formedat the inside of a hole 114 a of the mounting support 108, whereby theswitching protrusion 106 is efficiently pushed up and further the cap117 is prevented from separating by the emitting gas pressure in thecourse of cooling the liquid.

[0073] In another embodiment of the present invention, the liquidcooling device 100 is not limited such that the gas emitting hole 126 isformed in the cap 117. As shown in FIG. 16, a gas emitting hole 132 isdesigned such that it communicates from the bottom end of the annularprotrusion 110 of the mounting support 108 near to a position ofinserting the packing 115.

[0074] Referring to FIGS. 17 to 19, the liquid cooling device 100 isdesigned such that the switching portion 104 is inserted into theswitching portion inserting groove 114 of the mounting support 108, apacking 133 is stuck to an end of the switching portion 104, a threadedportion 135 is formed at a lower side of an annular jaw 134 formed underthe packing 133, and a switching protrusion 125 is formed at the cap 117coupled to the mounting support 108.

[0075] Further, a threaded portion 136 is formed around the protrusion125, a step-shaped protruding needle 137 is formed at an upper side ofthe protrusion 125, and a seal packing 138 is coupled to a lower stepjaw portion of the protruding needle 137.

[0076] The gas emitting hole 126 communicates from the threaded portion138 of the protrusion 125 to the outside thereof and a gas emitting hole139 is formed at an outer wall of the protruding needle 137.

[0077] In this embodiment, as shown in FIG. 17, the knob 124 is pulledto separate the skirt 121 in state that the cap 117 is coupled to thebottom of the mounting support 108, and then the cap 117 is rotatedclockwise for the protruding needle 137 to punch the packing 133 so thatthe switching portion 104 is open. At the same time, the coolant gas isevaporated through the nozzle portion 102 and the nozzle tube 103thereby cooling the liquid. Arrows shown in FIG. 18 show a course of thecoolant gas from the coolant gas bottle 101 to the gas emitting holes126 and 139.

[0078] Further, the annular jaw 134 can be provided at its lower sidewith a coolant gas emitting hole 14 for smoothly emitting the gas.

[0079] Referring to FIG. 19, as the cap 117 is further rotated clockwiseand tightens, the packing 134 contacts the bottom of the annular jaw 134and the switching portion 104 is closed thereby stopping the emission ofthe coolant gas.

[0080] Therefore, it can be possible to control the amount of emittingcoolant gas and the temperature of the liquid of the container 200 bycontrolling the degree of rotating/tightening of the cap 117.

[0081] In another embodiment of the present invention, as shown in FIGS.20 to 24, the liquid cooling device 100 comprises a coolant gas bottle600 which is mounted at the bottom of the container 200 and isintegrally formed of coil-shaped coolant gas bottle 600 and a cap 700which is coupled to the bottom of the coolant gas bottle 600.

[0082] Referring to FIG. 20, the coolant gas bottle 600 is designed suchthat its length proportions with a volume of the container 200 and isformed with a nozzle portion 602 within a pressing portion 602.

[0083] A diffusing tube 603 is formed at a lower side of the nozzleportion 602 and a coupling portion 605 having a step jaw 604 is formedat a bottom end of the diffusing tube 603.

[0084] Referring to FIG. 22, the coolant gas bottle 600 is coupled tothe bottom portion 201 of the container 200 and the coupling portion 605of the coolant gas bottle 600 is sealed with the bottom portion 201thereby making a sealed portion 606.

[0085] As shown in FIG. 21, the cap 700 coupled to the coupling portion605 is divided into upper and bottom side portions 701 and 702 by aseparating guide line 703, an engagement jaw 704 is formed in an innerside of the upper side portion 701 and an knob 705 is formed at thebottom side portion 702 for terminating the bottom side portion from theupper side portion 701.

[0086] The cap 700 is designed such that the sealing portion 706 isformed with an annular band 708, a coolant gas emitting groove 707 isextended to the engagement jaw 704 and the coolant gas emitting groove707 spaces from the annular band 708.

[0087] Further, there is a coolant gas emitting groove 709 at theoutside of the annular band 708. A central portion of the annular band708 is provided with a seal stick 710 formed at its upper end with aseal protrusion 711. The seal stick 710 is provided with a coolant gasemitting groove 712 spaced from the seal protrusion 711.

[0088]FIG. 23 is a partly enlarged sectional view where the coolant gasbottle 600 and the cap 700 are coupled as described above. The cap 700coupled to the bottom of the coolant gas bottle 600 is designed suchthat its seal protrusion 711 is coupled to the upper end of the nozzleportion 602 through a hole of the nozzle portion 602 thereby maintainingthe sealed state. The annular band 708 is flexibly passed through aninner wall 605′ and is fixed to the step jaw 604, and the seal portion706 is sealed with the inner wall 605′. At this point, the engagementjaw 713 of the cap 700 is engaged with the sealed portion 606 and fixedthereto.

[0089] Referring to FIG. 23, when the knob 705 is pulled in state thatthe cap 700 is coupled to the bottom of the coolant gas bottle 600, alateral separating guide line (not shown) and the separating guide line703 are separated thereby terminating the bottom side portion 702.

[0090] In this state, pressing the cap 700, the cap 700 upwardly movesas shown in FIG. 24. As a result, the coolant gas emitting holes 707,709 and 712 is open, the coolant gas G contained in the coolant gasbottle 600 flows into the diffusing tube 603 through the coolant gasemitting groove 712 and is evaporated. At the same time, the evaporatedgas G is emitted out through coolant gas emitting grooves 707 and 709.

[0091] As the coolant gas bottle 600 is shaped of a coil, the contactsurface between the liquid and coolant gas bottle 600 increases andcomplies an effective heat transmission. Especially, the coolant gasbottle 600 is integrally formed so that it can be possible to maintain aperfect sealing.

[0092] In still another embodiment of the present invention, the liquidcooling device 100 is designed such that the coolant gas bottle isshaped of a coil and is able to be longitudinally folded.

[0093]FIGS. 25 and 26 shows another embodiment of the present invention.The liquid cooling device 100 is designed such that a pressing portion801, a diffusing nozzle 803 and a coupling portion 805 having a step jaw804 are formed in order at a lower side of a coolant gas bottle 800, andthe coolant gas bottle is provided with plural pressing portions 801

[0094] As shown in FIG. 26, the pressing portions 801 is independentlyformed with the nozzle portion 802 and inserted therewith.

[0095] The coolant gas bottle 800 of the embodiment is designed suchthat the coolant gas is firstly evaporated and diffused through thenozzle portion 802 of the pressing portion 801 and then secondly andthirdly evaporated and diffused through each below nozzle portion 802thereby improving a cooling effect.

[0096]FIG. 27 shows another embodiment of the present invention. Thecoolant gas bottle 800 is not provided with an independent nozzleportion 102 but provided with a neck portion 802′ thereof.

1. A self-cooling liquid container having a liquid cooling device forcooling a liquid in a container by evaporation of a coolant gascomprising: a coolant gas bottle inside the liquid container containinga coolant gas stored under pressure; a nozzle tube communicating withthe coolant gas bottle and rounding outside the coolant gas bottle; amounting support for mounting and supporting the coolant gas bottleinserted into the liquid container, and having a switching portion forselectively releasing the coolant gas; and a cap coupled with themounting support outside of the container and selectively opening andclosing the switching portion.
 2. The self-cooling liquid container asclaimed in claim 1, wherein the nozzle tube is horizontally bent severaltimes.
 3. The self-cooling liquid container as claimed in claim 1,wherein the liquid cooling device is mounted inside a can.
 4. Theself-cooling liquid container as claimed in claim 1, wherein the liquidcooling device is mounted on a bottom of a bottle.
 5. The self-coolingliquid container as claimed in claim 1, wherein the liquid coolingdevice is mounted to a flexible container formed of paper, syntheticresins and pouch.
 6. The self-cooling liquid container as claimed inclaim 1, wherein the liquid cooling device is mounted to a containercap.
 7. The self-cooling liquid container as claimed in claim 6, whereinthe bottle cap is provided at its end with an opening identificationskirt.
 8. The self-cooling liquid container as claimed in one of claims1 to 6, wherein the switching portion is provided with a switchingprotrusion downwardly forced by an inner spring.
 9. The self-coolingliquid container as claimed in one of claims 1 to 6, wherein themounting support is elastically mounted on a bottom of the container andis formed with a hole for releasing a coolant gas emitting from thecoolant gas bottle.
 10. The self-cooling liquid container as claimed inclaim 9, wherein the mounting support is provided with a seal-ring forsealing the container therewith.
 11. The self-cooling liquid containeras claimed in one of claims 1 to 6, wherein the cap is provided with apulling knob for breaking a separating guide line.
 12. The self-coolingliquid container as claimed in one of claims 1 to 6, wherein the cap isscrewed with the bottom of the mounting support.
 13. The self-coolingliquid container as claimed in one of claims 1 to 6, wherein the cap isformed at its inside with a protrusion that opens the switching portionwhen the cap is rotated in an opening direction.
 14. The self-coolingliquid container as claimed in one of claims 1 to 6, wherein the cap isformed with a gas emitting groove for emitting the coolant outside fromthe switching portion.
 15. The self-cooling liquid container as claimedin claim 9, wherein the mounting support is formed in its through holewith an annular groove for receiving the protrusion.
 16. Theself-cooling liquid container as claimed in claim 1 or 2, wherein thenozzle tube is rounded around the coolant gas bottle in an irregulardiameter.
 17. The self-cooling liquid container as claimed in claim 1 or2, wherein the nozzle tube is longitudinally bent several times.
 18. Theself-cooling liquid container as claimed in one of claims 1, 2, 16 and17, wherein the nozzle tube is further provided with a reinforcementpart for preventing a deformation.
 19. The self-cooling liquid containeras claimed in claim 9, wherein the switching protrusion is formed at itsinside with an emitting hole for emitting the coolant gas.
 20. Theself-cooling liquid container as claimed in claim 19, wherein theswitching protrusion is sharpen at its end, the cap protrusion islocated in the space where the switching protrusion is located and isformed at its circumference with an annular band.
 21. The self-coolingliquid container as claimed in one of claims 1 to 6, wherein themounting support is formed in its through hole with a thread and the capis formed at the circumference of the cap protrusion with a thread forengaging with the through hole thread.
 22. The self-cooling liquidcontainer as claimed in one of claims 1 to 6, wherein the mountingsupport is formed with a gas emitting groove extended from the bottom ofthe annular protrusion to the position near a sealing packing.
 23. Theself-cooling liquid container as claimed in one of claims 1 to 6,wherein the sealing packing is located in the end of the switchingportion and a protruded needle is formed at the end of the capprotrusion thereby emitting the coolant gas through the sealing packing.24. The self-cooling liquid container as claimed in claim 23, whereinthe cap protrusion is formed at its circumference with a thread portionthereby engaging with the mounting support.
 25. The self-cooling liquidcontainer as claimed in claim 23, wherein the cap protrusion andprotruded needle is formed with the gas emitting groove for emitting thecoolant gas emitted through the switching portion.
 26. The self-coolingliquid container as claimed in claim 23, wherein an annular jaw isformed below the sealing packing for supporting the packing, and a gasemitting groove is horizontally bored through the annular jaw.
 27. Theself-cooling liquid container as claimed in one of claims 1 to 6,wherein the liquid cooling device is designed such that, if the pressureof the coolant bottle increases and continuously over-presses the nozzletube, the switching protrusion and the sealing packing deform therebyreleasing the coolant gas of the coolant bottle for preventing explosionover allowable pressure.
 28. The self-cooling liquid containercomprising: a spiral coolant gas bottle inside the liquid containerrigidly coupled and containing a coolant gas stored under pressure; anda cap coupled to the end of the spiral coolant gas bottle therebyreleasing the coolant gas when it is open, wherein it can be possible tocontrol the temperature of the liquid of the container by controllingthe degree of opening of the cap.
 29. The self-cooling liquid containeras claimed in claim 28, wherein the spiral coolant gas bottle islongitudinally bent several times at regular intervals.
 30. Theself-cooling liquid container as claimed in claim 28, wherein thecoupling portion of the spiral coolant gas bottle is provided at itsinside with a pressing portion, a cap is provided with a seal stickinserted into the pressing portion and switching a sealing protrusionnozzle portion, and is coupled with the coupling portion.
 31. Theself-cooling liquid container as claimed in one of claims 28 to 30,wherein the cap is formed with an upper side wall portion and lower sidewall portion divided by the separating guide line, and the cap isprovided at the lower side wall portion with a pulling knob.
 32. Theself-cooling liquid container as claimed in one of claims 28 to 30,wherein the cap is formed at its upper portion with an annular bandengaged with an engagement jaw formed in a diffusing tube of the coolantgas bottle.
 33. The self-cooling liquid container as claimed in one ofclaims 28 to 30, wherein the coupling portion of the coolant gas bottleis formed at its end with a assembling inner wall thereby sealing on abottom portion of the container.
 34. The self-cooling liquid containeras claimed in one of claims 28 to 30, wherein the coolant gas bottle isformed at its bottom end with a pressing portion having a nozzle portioninside thereof.
 35. The self-cooling liquid container as claimed inclaim 34, wherein the nozzle portion of the pressing portion isintegrally formed with the pressing portion.
 36. The self-cooling liquidcontainer as claimed in claim 34, wherein the nozzle portion of thepressing portion is independently formed with the pressing portion. 37.The self-cooling liquid container as claimed in claims 28 to 30, whereinthe pressing portion is formed with a plurality of pressing portionshaving the nozzle portion inside thereof.
 38. The self-cooling liquidcontainer as claimed in claim 37, wherein the nozzle portion of thepressing portion is integrally formed therewith.
 39. The self-coolingliquid container as claimed in claim 37, wherein the nozzle portion ofthe pressing portion is independently formed therewith.
 40. Theself-cooling liquid container as claimed in one of claims 28 to 30,wherein the coolant gas bottle is formed with a plurality of nozzleportions sized narrow diameter.
 41. A self-cooling liquid containercomprising: a coolant gas bottle inside the liquid container containinga coolant gas stored under pressure; a switching valve for selectivelyreleasing the coolant gas; and a cap operating the switching valve.